Gutenberg buttons color class names overwritten by Hello Elementor CSS

When using the native Buttons block in Gutenberg and specifying a named pre-defined text colour, it will get overwritten by the `style.css` and `style.min.css` of Hello Elementor.

The named pre-defined colours in Gutenberg have their own class name which are added to the button element and will be overwritten by Hello Elementor, however when selecting "Custom color" in Gutenberg and choosing from the color picker - these are added as inline `style="color:"` to the element and not as a class, in which case they're not overwritten.

So here are some examples of the defaults that get overwritten:

```
:root .has-white-color {
color: #fff;
}
:root .has-vivid-red-color {
color: #cf2e2e;
}
:root .has-vivid-cyan-blue-color {
color: #0693e3;
}
```